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formatter.go
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formatter.go
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/*
Copyright 2021 The Skaffold Authors
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package logger
import (
"fmt"
"io"
"sync"
eventV2 "github.com/GoogleContainerTools/skaffold/v2/pkg/skaffold/event/v2"
"github.com/GoogleContainerTools/skaffold/v2/pkg/skaffold/output"
"github.com/GoogleContainerTools/skaffold/v2/pkg/skaffold/tracker"
)
type DockerLogFormatter struct {
colorPicker output.ColorPicker
tracker tracker.Tracker
lock sync.Mutex
isMuted func() bool
id string
containerName string
prefix string
}
func NewDockerLogFormatter(colorPicker output.ColorPicker, tracker tracker.Tracker, isMuted func() bool, id string) *DockerLogFormatter {
return &DockerLogFormatter{
colorPicker: colorPicker,
tracker: tracker,
isMuted: isMuted,
id: id,
containerName: tracker.ArtifactForContainer(id).ImageName,
prefix: prefix(tracker.ArtifactForContainer(id).ImageName),
}
}
func (d *DockerLogFormatter) Name() string { return d.prefix }
func (d *DockerLogFormatter) PrintLine(out io.Writer, line string) {
if d.isMuted() {
return
}
d.lock.Lock()
defer d.lock.Unlock()
formattedPrefix := d.prefix
// if our original prefix wasn't empty, append a space to the line
if d.prefix != "" {
formattedPrefix = fmt.Sprintf("%s ", formattedPrefix)
}
if output.IsColorable(out) {
formattedPrefix = d.color().Sprintf("%s", formattedPrefix)
}
formattedLine := fmt.Sprintf("%s%s", formattedPrefix, line)
eventV2.ApplicationLog("", d.containerName, formattedPrefix, line, formattedLine)
fmt.Fprint(out, formattedLine)
}
func (d *DockerLogFormatter) color() output.Color {
return d.colorPicker.Pick(d.tracker.ArtifactForContainer(d.id).Tag)
}
func prefix(containerName string) string {
if containerName == "" { // should only happen in testing
return ""
}
return fmt.Sprintf("[%s]", containerName)
}